.game_box {
    display: flex;
    flex-wrap: wrap;
    padding: 5px;
    margin: 0 auto;
    background-color: #ddd;
    width: 80vw;
    height: 80vw;
    box-sizing: border-box;
}

.game_box li {
    display: flex;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
    border: 1px solid #ddd;
    color: #fff;
}

.control_quare_count {
    margin: 0 auto;
    width: 80vw;
    display: flex;
    flex-wrap: wrap;
}

.control_quare_count .adm-button {
    margin-left: 5%;
    width: 30%;
    margin-top: 20px;
}

.control_quare_count .adm-button:nth-child(3n+1) {
    margin-left: 0;
}

.next {
    text-align: center;
    line-height: 100px;
    font-size: 18px;
}
.timer{
    text-align: center;
    line-height: 50px;
    font-size: 18px;
}
.game{
    position: relative;
}
.game .back{
    position: absolute;
    left: 20px;
    top: 10px;
}

.reStart{
    margin-top: 50px;
    text-align: center;
    font-size: 20px;
    cursor: pointer;
}

.block{
    position: relative;
    margin: 0 auto;
    width: 80vw;
    height: 80vw;
}
.mask{
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background-color: #ddd;
    opacity: .98;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}
.tip{
    text-align: center;
    font-size: 16px;
    margin: 20px 0;
}